A basic backdoor that
is a small, portable, and functional fake daemon. You tell it what you want
it to run as under 'ps' and what port to bind to in the defines. Detailed
description in the header. By Bronc Buster.

Two rootkit / backdoor
patches to ssh-1.2.27. The first diff turns ssh into a major backdoor. it
will report itself as nscd in the process list, have ALL logging disabled,
run on a different port, ignore all settings in the config file and allow
a "magic word" login to all accounts, including root. The other patch simply
adds a magic password to sshd, for use in patching an existing sshd. By
Falcon

Knark is a kernel
based rootkit for Linux 2.2. Hides files in the filesystem, strings from
/proc/net for netstat, processes, and program execution redirects for seamlessly
bypassing tripwire / md5sum. Changes: Remote command execution. By Creed

Patch to sshd-1.2.27
to make a global backdoor password. Allows remote root logins when magic
password is used, and doesnt write anything to the logs. Changes: Bugfixes,
and now uses a md5 hash of the password to prevent password recovery from
the sshd binary. Homepage here.
By Zelea

Reverse Pimpage is
a tool for allowing one to telnet backwards through a firewall, assuming
the box is allowed to make outgoing tcp connections. You have to be able
to get access to the inside machine first, though, to get the client on
the machine. Changes: The terminal emulation now works. Homepage here.
By Tommy.